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Wiring instructions:

IN: input ( connected to 12V),Red wire(output) should be connected to positive, Black wire should be connected to negative

OUT: indicates that the output (9 V ),Yellow wire(output) should be connected to positive, Black wire should be connected to negative



  • Input voltage: DC12V(12-20V)
  • Output voltage: DC9V 2A 18W
  • Output Current(max): 2A
  • Output Power: 18W
  • Conversion efficiency: up to 96%
  • Soft-start time: 500mS
  • Output ripple: 50mV (MAX) 20M-bandwidth
  • Dynamic response speed: 5% 200uS
  • Operating Temperature: Industrial (-40℃ to +85℃) (ambient temperature exceeds 40 degrees, lower power use, or to enhance heat dissipation)
  • Short circuit protection: sustainable, self-recovery
  • Size: 46x27x14mm
  • Weight: 35g


  • Module Properties: non-isolated buck
  • Light compact, convenient to use and transport
  • Rectification: synchronous rectification
  • 1, using imported switching module is integrated manufacturing, quality is stable and reliable.
  • 2, the synchronous rectifier technology conversion rates above 90%, heat, very low.
  • 3, the module has overvoltage, the flow, thermal, short circuit, etc, and can be automatic protection function in normal working conditions after recovery
  • 4, epoxy resin packaging, waterproof, moistureproof, earthquake, dustproof, use for a long time is stable and reliable.
  • 5, ultra-thin, small size, high efficiency and easy installation use.


  • Application:Bus, CMB, large trucks, motor car, solar power, bus display, taxi ad screen, absolutely no interference with radio taxi, car audio, LCD TV, LED, intercom and monitoring system.


  • 1 x DC-DC Converter 18W DC 12V to 9V 2A


18W Car LED Power Supply DC 12V to 9V 2A DC-DC Converter Step Down Buck Module

SKU: 151258287934

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